23 November 2010

For Nov. 24, Wednesday

@Bio
Quiz / Surprise something

@Chem
Quiz and homework (1/2 cw):
1) The combustion of 1.010g sucrose, C12H22O11, in a bomb calorimeter causes the temperature to rise from 24.92 C to 28.33 C. the heat capacity of the calorimeter assembly is 4.90 kJ/C.
a) What is the heat of combustion of sucrose, expressed in kilojoules per mole of C12H22O11.
b) Verify the claim of sugar producers that one teaspoon of sugar (about 4.8 g) "contains only 19 Calories)
Hint: 1 Calorie = 1000 cal = 1 kcal
2) Why do you go to school everyday?

@English
Speeches again.

@No make up class that I know of

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